Renowned Documentarian Filmmaker Errol Morris (THIN BLUE LINE) reunites with his Standard Operating Procedure composer Danny Elfman to create one of Mr. Elfman’s most hypnotic and intense scores to date. In the documentary Former United States Secretary of Defense, Donald Rumsfeld, discusses his career in Washington D.C. from his days as a congressman in the early 1960s to planning the invasion of Iraq in 2003.The digital version of THE UNKOWN KNOWN score will also be available via online services April 8, 2014.